William j



(No Model.)

W. J. BUSSE. PRINTBRS QUOIN.

Patented Mar. 8, 1892.

flag A c' a1 a C2. a C a ,Ilm I ATTES'VI'. INVENTORI f @MF/Mg? NiTnDSTATES l ATENT OFFICE.'

WILLIAM J. RUSSE, OF OI-IIOAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO JOHNR. BRANDT, or SAME PLACE.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 470,650, dated March 8,1892.

Application flied september 28, 1889. Renewed August 17, 1891.semina/1.02am. (No model.)

T a/ZZ wtom it may concer-71,:

Be it known that I, WILLIAM J. Busse, a

citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois have invented certain new and useful Improvementsin Printers Quoins, of which the following is a specification.

This invention relates to that type of printers quoins in which theduplicate expandio ing-wedges are inclosed by a laterally-expansiblecasing or housingconnected together i against independent longitudinalmovement, the objects of the present improvement being, first, toprovide in the above type of printers quoins a disconnected orindependently acting duplicate Wedge formation adapted to move inopposite directions and with which theinclination or slant of the wedgefaces can vbe made very slight and yet zo accomplish the usual amount oflateral eX- pansion of the quoin, in consequence whereof, the tendencyof the parts to jarring loose in l use is reduced to a minimum and theholding qualities of the quoin correspondingly in z5 creased; second, toprovide an improved construction of the laterally-expanding housing orcasing of the quoin, whereby the parts are connected together in alaterally-expansible manner only and at the same time afford meanswhereby the simultaneous movement of the duplicate wedge members can bepositively insured. I attain such objects by the construction andarrangement of parts illustrated in the accompanying drawings, in which-Figure l is a plan view of a printers quoin embodying mypresentimprovements; Fig. 2, a horizontal section of the same,illustrating the duplicate Wedge formation; Fig. 3, a side elevation,andFig. t a transverse section.

Similar letters and figures of reference indicate like parts in theseveral views. i

Referring to the drawings, A A represent l the outer laterally-movingcounterpart side pieces or wedges, the inner of faces which are inclinedin opposite directions, as shown, so as to form inclinedbearing-surfaces for the duplicate Wedges C and C', the inclined facesof which are arranged in opposite directions, 5o so as to correspondwiththe inclined faces of the outer pieces A A, as shown, thecontactfacesof the wedges being in a plane parallel with that of theouter bearing-faces of the side .pieces l and 2 of t'he quoin. As soconstructed a duplicate Wedge construction is pro- 5 5 vided that actsin an independent or disconnected mannerl and in opposite directions, sothat each individual wedge mechanism accomplishes one-half of the totalexpansion of the quoin, and in consequence thereof can be 6o` made witha correspondingly slighter inclination than would be the casein theusual single coactin g wedge mechanismnvhere the whole of thequoin-expansion is accomplished bya pair of contiguous inclined wedgefaces. With a `6,5 decrease in the inclination of the wedge snrfaces, asabove stated, a corresponding increase in the holding properties of theparts ensues, with a relative decrease in the liability of the partsjarring loose in practical use.

The housing or side pieces AA are connected together against independentlongitudinal movement, but capable of a limited lateral expandingmovement, by the following improved construction: The side pieces A Aare made somewhat deeper than the wedges O and C and are formed with topand bottom flanges that are cut away to form interlocking hook-shapedprongs ct and 01,', that engage together, as shown in Fig. l, to admit8o of the before-mentioned limited lateral eX- panding movement of theparts in the practical use of the quoin. Another practical advantage'resulting from the above improved construction is that it affords asimple, ready, 8 5 and perfect means to form a fulcrum for the usualpinion-key or wrench in imparting a simultaneous movement to thewedge-pieces C and C in an endwise direction past eachV other, thisbeing readily provided by an ap- 9o crture or orifice formed in thecentral part of the upper flange of one of the side pieces, asillustrated in Fig. l.

The duplicate wedges C and O are each connected to its .respective sideor housing piece A or A by a guide stud c, passing through alongitudinally-extending slot a2 in the inclined or obliquely-arrangedWeb CL3 of the housing-pieces and provided with a confining head orwasher c', as indicated in Figs. 10o 2, 3, and 4.

In the practical use the wedges O and C may be adjusted by blows, &c.,upon their thicker. end. It is preferable, however, to employ the usualWell-known rack-and-pinion movement for effecting an adjustment. Forthis purpose the meeting faces of the wedges C and C will be recessedout at their top side to form thetoothed racks c2, in which the usualpinion-key will be inserted and by its :rotation impart the requiredlongitudinal movement simultaneously and in opposite directions to saidwedges and a corresponding lateral adjustment to the said pieces A, thecentral flange aperture before described constituting a fulcrum for thepinion-key in effecting the simultaneous movement of the Wedges.

The advantages resulting from my iniproved construction, in addition tothose en- Asuing from the slight taper or inclination of the wedgefaces, as before stated, are that vthe parts are all connected togetherand will not accidentally fall apart. An accidental blow upon theprojecting'ends of the Wedge-v pieees will only tend to tighten theadjustment of the quoin parts instead of tending to loosen the same, asin some former constructions. It admits of a longitudinal movement ofthe wedges bodily together in an oblique direction between thehousing-pieces without affecting the lateral adjustment of the same,this feature being of especial value in cases where the quoin is usedclose up to the corner of the type-holding chase.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

` l. A printers quoin comprising, in co1nbination, an inner expandingwedge mechanism and an outer two-part housing formed withtop and bottomlian ges that are cutaway the top of the wedges and provided with anaperture to form a fulcrum for the pinion-key employed to impartsimultaneous movement to the wedges, substantially as set forth.

3. A printers quoin comprising, in combination, a pair .of outerlaterally-adjustable side or housing pieces, the inner faces of whichare inclined in opposite directions, and a pair of duplicate innerWedges, the outer faces of which are correspondingly inclined, the partsconstituting a quoin having a pair of independent and disconnected wedgeconstructions, substantially as herein described.

4. A printers quoin comprising a pair of outer laterally-adj ustableside or housing pieces having top and bottom interlocking prongs a andct and longitudinally-slotted Webs as, in combination with the duplicateinner wedge-pieces having guide-studs c, that pass through the slottedwebs CL3 and are provided with confining heads or Washers c 1substantially as set forth.

In testimony whereof witness my hand this 23d day of September, 1889.

WILLIAM J. BUSSE. In presence of- ROBERT BURNS, GEO. ILARTHUR.

